Díaz Pablo, Navarro Esther, Remesar Susana, García-Dios David, Martínez-Calabuig Néstor, Prieto Alberto, López-Lorenzo Gonzalo, López Ceferino Manuel, Panadero Rosario, Fernández Gonzalo, Díez-Baños Pablo, Morrondo Patrocinio
Department of Animal Pathology (INVESAGA Group), Faculty of Veterinary Sciences, Universidade de Santiago de Compostela, 27002 Lugo, Spain.
Animals (Basel). 2021 Jan 20;11(2):256. doi: 10.3390/ani11020256.
An age-related distribution of species has been reported in cattle, with being predominant in suckling calves, and being predominant in post-weaned calves and being predominant in adults. However, variants to this pattern have recently been reported. Thus, fecal samples (n = 594) from asymptomatic cattle were collected in north-western Spain. Animals were classified as <1 month (G1), 1-2 months (G2), 2-12 months (G3), 12-24 months (G4) and >2 years (G5). detection and species identification were performed by SSU rRNA PCR. Individual prevalence was 16.7%; it significantly decreased with age. was predominant in G1 and was predominant in the rest of the age classes; and were especially prevalent in G2 and G3. was not found in suckling calves. Finally, and were occasionally detected in G5. The presence of in all age classes implies significant animal and public health concerns. The predominance of in cattle older than 1 month supports the idea that the age-related pattern of species described in cattle is not fully consistent, and thus further studies are still needed to identify those factors determining the species distribution.
据报道，牛的物种分布与年龄有关，在哺乳犊牛中 占主导地位，在断奶后犊牛中 占主导地位，在成年牛中 占主导地位。然而，最近有报道称这种模式存在变体。因此，在西班牙西北部收集了无症状牛的粪便样本（n = 594）。动物被分为<1个月（G1）、1 - 2个月（G2）、2 - 12个月（G3）、12 - 24个月（G4）和>2岁（G5）。通过SSU rRNA PCR进行 检测和物种鉴定。个体 患病率为16.7%；它随年龄显著降低。 在G1中占主导地位，在其他年龄组中 占主导地位； 和 在G2和G3中特别普遍。在哺乳犊牛中未发现 。最后，在G5中偶尔检测到 和 。所有年龄组中 的存在意味着对动物和公共卫生有重大担忧。1个月以上牛中 的优势支持了牛中描述的 物种与年龄相关模式不完全一致的观点，因此仍需要进一步研究以确定那些决定物种分布的因素。
